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WE FT STOP MOTION FOR L OOMSr Patented Jai 24, 1888.

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I 2 Sheet L. J. KNOWLES, Decd.

F. B. KNOWLES & H. A. MARSH, SurvivingExe eutors. WEFT STOP MOTION FOR LOOMS.

No. 376,777. Patented Jan- '24, 1888. I

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. U ITED STATES PATENT FFI'CEG V AND HENRY A.'MARSH SURVIV KNOWLES, DECEASED.

ING EXEGUTORS or SAID Lucius J;

WEFT STOP-MOTION FOR Looms.

SPECIFICATION forming part of Letters Patent No. 376,777, dated January 24, 1888. Application filed April 20, 1882. Serial No. 58,94ll. (No model.) Patented in England July 31, 1882, No. 3,629.

To all whom it may concern.-

Be it known thatl, LUcIUs J. KNOWLES, of

Worcester, in the State of Massachusetts, have invented a new and useful Weft Stop-Motion for Looms, (for which British Letters Patent have already been granted to me under date of July 31, 1882, and numbered 3,629,) of which the following is a specification.

The present invention has reference to that IO class of stop-motions in which the weft feelerwires are pivoted to the front of the lay within the warp. It embodies inventions described and claimed in my applications Nos. 58,947

and 58,948, filed herewith, and is an improve- 5 ment thereon.

It consists in a specific form of construction employing, in connection witha slotted lay, a long feeler-shaft, one end of which within' the warp carries the feeler-wires, while the other end without the Warp carries the dagger, the said feeler-shaft and its feelers and dagger, besides partaking of the motionof the lay in its beats, being rocked by the contact, with the dagger or other rigid projection from the feeler- 2 5 shaft outside of the warp, of the upper end of a substantially-vertical governing-rod, which is so pivoted at its lower end that it will" vi-- brate with the lay, but upon a different center.

In the drawings, Figure 1 is a side elevation, partially in section, of so much of aloom and attachments thereto as is sufficient to illustrate the construction and mode of operation of my said improved stop-motion.

the stop-motion thereupon. Fig. 3 is a partial plan of the lay and mechanism attached thereto, and also of the breast beam and mechanism supported thereby, together with a portion of the warp and woven cloth. Fig. 4 is a detail of construction.

A is the loom-frame.- B is the breast-beam. C is they shipper-lever shaft, being a rockshaft in suitable bearings beneath'the breastbeam. It has connected with it any ordinary belt-shifting mechanism and a shipper-lever for operating said mechanism by hand. D is the knock-off lever, being a weighted Fig. 2 is a 3 5 partial front elevation of the lay and parts of strikes the projection e of the knock-off lever the said pin (1 bears upon the armE toiroclr,

The projection c has a nt of the'65 shifting mechanism.

flange, as shown, to prevent the poi dagger from slipping over it.

L is the lay.

, H is'one of the lay-swords, p

ivoted to a pin,

pin being'the center ofvibration of the and parts attached to thelay. g

-J and J are two plates, secured to the front faceof the lay by screws, as shown, one within the warp and the other outside of it. H Each are bearings for the long feeler-shaft of, as shown. The feeler-wires w are secured to the inner end of thefeelenshaft, in front of the feeler-slot s, by means of an adjustable sleeve,

the said sleeve, and a screw, 1), secures the sleeve to the shaft. I

To the outer end' of the feeler-shaft a out side of the lug a, is'rigidly secured the dagger K,'as shown. Itsrear end extends into a 85 small slot, 8, in thelay. A stop, if, in'said slot s limits the downward movement of the rear end of the dagger, and consequently of the feeler-wires, since the feeler-wires anddagger spring, l,wound around thefeeler-shaft a}, and having one end secured to the lug a,whilethe other is secured to a sleeve, It, held upon said feeler-shaft in any required position by ascrew,

dagger down upon the stop it.

The dagger K and the knock-off lever D are located relatively to each other, one upon the V elbow-lever pivoted at c to. a brachetyB, 5o

per-lever shaft C, so that when the dagger h the shipper-lever shaft and operate the belti, at the bottom of the loom-frame, the said l 7 plate has at the top a lug, a and a, in which d, as shown. A screw,p, secures the wires to are rigidly secured ,to the same shaft. A s

as shown, tends to throw the rear end of the 93 1 lay and the other upon the breast-beam, and both outside of the warp, as shown.

I? is the beforementioned governing-rod, pivoted to a stand, R, upon the floor beneath the loom, as shown. Near its upper end it is bent, as shown, so that its upper portion is parallel with the front face of the lay. This upper portion enters a slot cut in the rear of the plate J in the vertical plane of the dagger and has a vertical play in this slot, as hereinafter described. c

The adjustment is such that when the lay reaches a proper place in its backward movement the upper end of the goVering-rod strikes the rear end of the dagger, and through the remainder of the backward movement of thelay overcomes the force of the spring Z and raises the rear end of the dagger, and consequently rocks the feeler-shaft a and raises the feelerwires. As the lay comes forward the governing-rod recedes through the slot in the back of the plate J and is followed down by the rear end of the dagger under the force of the spring Z. The feelerwires fall with the rear end of the dagger until in the normal operation of the loom they rest upon the weft-thread. If the weft-thread has been well thrown, the feeler-wires resting upon it hold up the dagger against the force of the spring Z for a portion of the forward movement of the lay, so thatits point passes under the projection e of the knock-offlever; but if the weft-thread has not been well thrown and the feeler-wires fail to find it they fall immediately into the slot 8 in the lay, and accordingly the rear end of the dagger descends in the slots until it rests upon the stop t, the point of the dagger in the meantime rising so as to strike the projection e of the knock-off lever andoperate thebelt-shifting mechanism.

A. slot is cut inthe breast-beam, as shown in dotted lines, to receive the point of the dagger when it passes-under theprojection e, and is of such shape as to permit the vibration of the dagger and feeler'wires to begin at any required time.

In the normal operation of the loom,after the point of the dagger has passed under the knock-off lever, the feeler-wires draw oil" from the weft-thread and fall into the slot s,in order that they may not interfere with the beating up of the weft.

The shipper'shaft-operating devices shown herein are shown,described, and made the subject of claims in my application No. 58,947, filed simultaneously herewith, and therefore are not claimed herein; nor do I claim herein pivoting both feeler-wires and dagger to a single shaft or pivot upon the front face ofthe lay, having made substantially such claim in mysaid application No. 58,947; nor doI claim, broadly, herein the use of a long feeler-shaft upon the front face of the lay carrying the feelers within the Warp, while the rocking mechanism is without the warp, such being the substance of claims in my said application No. 58,9l8.

I do claim hcreinp The combination, with the slotted lay and bearings upon the front face thereof, of thelong feeler'shaft a", one end of which lies within the warp and is provided with feeler-wires w opposite the slot in said lay,while the other end extends without the warp,th e daggerK,rigidly' attached to said feeler-shaft without the warp, and the pivoted governing-rod P,also without the warp, substantially as described.

LUOIUS J. KNOWLES.

Vitnesses:

J. M. RUssELL, H. H. MERRIAM. 

